when you go to reinstall the axle shaft. I used the wide yo-yo. Cut off the hook at "0" inch. For tech, this is an '85 K10 Sub 10b, (with leaky power steering). Oh, and I caught the trunnions just in time, the grease was closer to damp mud. They were marked "spicer", but the truck has 180Km. Oh. and grab the tape when you wind it up.